Paper-bag machine.



D. APPEL.

. PAPER BAG MACHINE.

Patented Jan. 4, 1910i 2 SHBETS-SHBEI 1.

D. APPEL.

PAPER BAG- MACHINE.

APPLIOATION IILED 00r.21, 1908 Patented Jan. 4, 1910.

nnrrnn srarns PATT ornron DANIEL APPEL, OF CLEVELA1\TD, OI-IIO, ASSIGNORTO THE ADVANCE BAG COMPANY, OF MIDDLEIOWN, OI-IIO, A CORPORATION OFOHIO.

PAPER-BAG MACHINE.

T0 (ZZ whom it may concern:

Be it known that I, DANIEL APIEL, a citizen of the United States,residing at Cleve land, in the county of Cuyahoga and State of Ohio,have invented a certain new and useful Improvement in Paper- BagMachines, of which the following is a description, reference being hadto the accompany ing drawings, forming part of this specifi cation.

My invention relates more particularly to machines for forming what areknown as square satchel-bottomed paper bags, commonly calledself-opening square or S. O. S. bags, and consists in novel devices forforming the diamond-fold upon the ends of the bag blanks, whereby thesimplicity and etfi ciency of machines of this character may beincreased.

In the accompanying drawings, in order to illustrate the principle andmode of operation of my inve'ntion in its simplest form, I have shown itindependently of the cletails of a commercial machine, illustrating onlythe parts constituting and immediately associated with the invention.

In said drawings Figure 1 is a front elevation of one end of a pair ofrolls and the devices co3perating therewith to partially form thediamond fold upon the end of the bag blank, said devices being shown inthe position they occupy when they have opened out the end of the blankinto box form in the process of forming the diamondfold thereon; Fig. 2a perspective view of the same parts in the same position; Fig. 3 aperspective view of the same part-s at approximately right angles to theview in Fig. 2; Fig. et a front elevation of the complete rolls androtating fingers, and the rotating folding blades; F ig. 5 a sideelevation, partly in section, of the same; and F ig. 6 a perspectiveview of the mouth of the bag blank opened out into box form.

The same letters of reference are employed to indicate correspondingparts in the several views.

A and B represent a pair of rolls occupying the position of the usualdiamond-forming rolls in machines of this character; but

in the present instance these rolls are not provided with any of theusual gripping devices for engaging and opemng out the bag blank, andmay be simply a pair of Specficaton of Letters Patent.

Application filed October 21, 1908.

Patented Jan. 4, 1910.

Serial No. 458,855.

plain rolls. They do not operate as feed rolls, and are separated fromeach other to permit the passage between them of the rotating fingers AB by means of which, in cooperation with the rolls, the mouth of the bagblank is opened out into box form, as shown in F igs. l, 2 and 6. Attheir outer ends these fingers A B are secured to and carried by a pairof rotating hubs a Z) mounted upon inclined axes, and geared together bya pair of beveled gears a Z), as shown. The fingers A B project fromtheir supporting hubs at an angle to the axis of rotation thereofapproximately the same as that of the faces of the beveled gears.

The rolls A B and the rotating fingers A B co6perate together to openout the mouth of the bag blank into the box form shown in the followingmanner: The bellows-folded bag blank is fed forward between the rolls AB, as usual, the upper and lower plies of its opposite bellows foldsbeing held apart by a suitable spreader or separator, C, as in caseswhere the plies of the blanl: are to be engaged by the side grippersusually employed in m ehines of this character. As the front end oithebag blank passes forward between the rolls the rotating fingers A B atthe proper time enter be tween the rolls, and between the upper andlower plies of the bellows folds of the blank, as shown in Fig. 3, andas the ends of the fingers swing on forward (and upward and downward,respectively,) the planes of their rotation cause them to press theupper and lower plies of the blank against the faces of the rolls A B.The fingers A B are slightly resilient, so that they may press the pliesof the bag blanl: against the faces of the rolls with a yieldingpressure, and their speed of rotation is such that their inner endstravel slightly faster than do the surfaces of the rolls. The result isthat they move forward with and upon the faces of the rolls with awiping action, holding the upper and lower plies of the blank to thesurfaces of the rolls and maintaining them in taut condition. As theinner ends of the fingers A B move forward and upward and downward,respectively, they also move outward over the faces of the rolls, towardthe ends thereof, and the adjustment of the parts is such that as theends of the fingers approach the ends of the rolls they spread the upperand lower plics of the blanl: apart to the limit permitted by the blank,thereby opening out the mouth of the blank into the box form shown inFigs. 1, 2 and G.

When the mouth of the blank has been thus opened out into box form, thediamond fold may be completed in any suitable manner and by any suitablemeans; but in the present instance I have illustrated novel means forcompleting the diamond-fold, especially adapted for efiicientcooperation with my novel means above described for opening out themouth of the blank into box form. This novel means for completing thediamond fold consists of a pair of rotating blades D D, Figs. al: and 5,snitably supported upon vertical axes at their upper ends, and adapted,after the fingers A. B approach the position shown in Figs. 1 and 2 andbring the mouth of the bag blank into the box form there shown, to swinginward against the opposite sides of the box so formed, and press theminward and flatten them out into an approximately vertical plane, asshown in Figs. 4 and 5, thereby completing the formation of the diamondfold in that manner.

As an auxiliary to the diamond-forming devices above described, Iprovide a supplemental finger B Fig. 4, upon each of the hubs or rotarysupports of the two fingers B B which coperate with the lower roll B.These fingers project from their axes of rotation at a considerableangle from the fingers B B. and follow after the latter in theirrotation. Their inner ends are so bent or shaped as not to engage thesurface of the roll B, but on the contrary as they swing between therolls their inner ends project far enough above the surface of the lowerroll to pass over both plies of the bellows side-folds of the blank. Theposition of these fingers B B is such that they swing in between the tworolls behind the main transverse crease of the bag blank, which isformed at the middle of the diamond-fold and along which the upper halfof the diamond-fold is bent back upon the body of the blank, and theirfunction is to engage the bag blank near such erease line and draw itbodily downward with the lower roll as it moves forward from between therolls, and thereby facilitate the folding backward of the upper half ofthe diamond fold upon the body of the blank as the latter passesdownward from the diamondforming rolls to the pasting and folding rolls,which latter may be of the usual or any suitable construction andtherefore need not be illustrated or described.

As heretofore stated, and as will be obvious from the explanation whichhas been given, the rolls A B may be perfectly plain rolls, but I preferto mount upon these two rolls the cutting devices for partially orwholly severing the bag blanks, and also the creasing devices forforming the main transverse crease of the diamond fold, heretoforereferred to. To this end T, secure in the roll A a transverse cutter E,Fig. 5, which cotiperates with a recess or groove E in the roll B tosever the bag blank from the bag tube at each revolution of the rolls;and I also secure in the roll A. a transverse creaser plate or bar Fwhich coiperates with the groove F in the roll B, to form the aforesaidcrease in the bag blank.

As will be appreciated by those skilled in the art, the diamond-formingdevices which I have illustrated and described are of extremesimplicity, as compared with any heretofore devised and used, and owingto the fact that the movement of all of the parts comprising them is acontinuous rotary one, they provide for and permit a speed of operationmaterially greater than is possible in machines of this character inwhich any of the essential parts have other than rotary movement.

It will also be understood by those skilled in the art that in mymachine, as in many machines of this character, only a portion of thesurfaces of the rolls A B perform any essential function, and that theremain der of the rolls might be out away or omitted, leaving simplyrotary supports for the essential portions. Where, therefore, rolls arereferred to in my elaims it is not to be understood that I intend tolimit such claims to the employment of complete cylindrical rolls.

Again, while my invention can be utilized to the greatest advantage andto the fullest extent by employing both sets of fingers A A and B B,coperating with the upper and lower rolls, respectively, neverthelesseither roll, with its coperating set of fingers, may be employedindependently of the other roll and its coperating fingers. Forinstance, the upper roll A and its cooperating fingers A A may beemployed in connection and cooperation with a lower roll provided withsuitable gripping devices for handling the lower ply of the bag blank,or the lower roll and its coperating fingers may be employed inconnection with an upper roll provided with suitable gripping devicesfor handling the upper ply of the blank; and I therefore desire tosecure as my invention the rotating fingers eooperating with either anupper or a lower roll, or its equivalent, in the manner and for thepurpose described.

Having thus fully described my invention, I claim:

1. In a paper bag machine, the combination of the roll A and therotating fingers A A mounted independently of said roll at the Oppositeends thereof and co6perating therewith to assist in opening out themouth of the bag blank in the manner described.

2. In a paper bag machine, the combination of the roll B and therotating fingers B B mounted independently of said roll at the oppositeends thereof and coperating therewth to assist in opening out the mouthof the bag blank in the manner described.

3. In a paper bag machine, the combination of the roll B and therotating fingers B B and B B mounted independently of said roll andcoperating therewith to assist in opening out the mouth of the bagb1ank, in the manner described.

4. In a paper bag machine, the combination of the rolls A B and therotating fingers A A and B B mounted independently of said rolls andcoperating therewth to open out the mouth of the bag b1ank in the mannerdescribed.

5. In a paper bag machine, the combination of the rolls A B and therotating fingers A. A, B B and B B mounted independently of said rolls,and c06perating therewith to open out the mouth of the bag blank in themanner described.

6. In a paper bag machine, the combina tion of the rolls A B, therotating fingers A A and B B mounted independently of said rolls andcoperating therewith to open out the mouth of the bag blank, and the rotating blades D D for flattening down the mouth of the blank, in themanner descrbed.

7. In a paper bag machine, the combination of the rolls A B, therotating fingers A A, B B and B B mounted independently of said rollsand coperating therewith to open out the mouth of the bag b1ank, and therotating blades D D for fiattenng down the mouth of the b1ank, in themanner described.

DANIEL APPEL.

Vitnesses:

JOSEPH H. KIT0HEN, C. A. COBLENTZ.

